puritan vs unpleasant person

puritan and unpleasant person both are nouns.

Word	Noun	Adjective	Verb	Adverb
puritan	Yes	No	No	No
unpleasant person	Yes	No	No	No

As nouns, unpleasant person is a hypernym of puritan; that is, unpleasant person is a word with a broader meaning than puritan:

Other hypernyms of puritan include disagreeable person.

puritan (noun)	unpleasant person (noun)
someone who adheres to strict religious principles; someone opposed to sensual pleasures	a person who is not pleasant or agreeable
a person excessively concerned about propriety and decorum